GeneratedSoundStream< T > Class Template Reference

Source for reading generated tones. Please note. More...

#include <AudioStreams.h>

Inheritance diagram for GeneratedSoundStream< T >:

Public Member Functions
	GeneratedSoundStream ()=default
	GeneratedSoundStream (SoundGenerator< T > &generator)
virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.
virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
virtual AudioInfo	audioInfoOut ()
virtual int	available () override
	This is unbounded so we just return the buffer size.
virtual int	availableForWrite () override
virtual int	availableForWrite () override
bool	begin () override
	start the processing
bool	begin (AudioInfo cfg)
	start the processing
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
AudioInfo	defaultConfig ()
void	end () override
	stop the processing
void	flush () override
bool	isActive ()
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
	operator bool () override
size_t	readBytes (uint8_t *data, size_t len) override
	privide the data as byte stream
virtual size_t	readSilence (uint8_t *buffer, size_t length)
	Source to generate silence: just sets the buffer to 0.
virtual size_t	readSilence (uint8_t *buffer, size_t length)
	Source to generate silence: just sets the buffer to 0.
virtual bool	removeNotifyAudioChange (AudioInfoSupport &bi)
	Removes a target in order not to be notified about audio changes.
virtual bool	removeNotifyAudioChange (AudioInfoSupport &bi)
	Removes a target in order not to be notified about audio changes.
void	resize (int maxReadSize)
	Redefine the buffer size which is reported in available().
virtual void	setAudioInfo (AudioInfo newInfo) override
	Defines the input AudioInfo.
void	setAudioInfo (AudioInfo newInfo) override
void	setInput (SoundGenerator< T > &generator)
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active).
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active).
void	setWriteBufferSize (int size)
void	setWriteBufferSize (int size)
virtual size_t	write (const uint8_t *data, size_t len) override
virtual size_t	write (const uint8_t *data, size_t len) override
virtual size_t	write (uint8_t ch) override
virtual void	writeSilence (size_t len)
	Writes len bytes of silence (=0).
virtual void	writeSilence (size_t len)
	Writes len bytes of silence (=0).

Protected Member Functions
virtual int	not_supported (int out, const char *msg="")
virtual int	not_supported (int out, const char *msg="")
void	notifyAudioChange (AudioInfo info)
void	notifyAudioChange (AudioInfo info)
void	refillReadBuffer ()
	Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read().
void	refillReadBuffer ()
	Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read().

Protected Attributes
int	_timeout = 10
bool	active = true
int	buffer_size
AudioInfo	info
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
SoundGenerator< T > *	p_generator = nullptr
const char *	source_not_defined_error = "Source not defined"
RingBuffer< uint8_t >	tmp_in {0}
RingBuffer< uint8_t >	tmp_out {0}
int	write_buffer_size = 8

Detailed Description

template<class T = int16_t>
class audio_tools::GeneratedSoundStream< T >

Source for reading generated tones. Please note.

• that the output is for one channel only!
• we do not support reading of individual characters!
• we do not support any write operations

Parameters

generator

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

GeneratedSoundStream() [1/2]

template<class T = int16_t>

GeneratedSoundStream ( )

default

GeneratedSoundStream() [2/2]

template<class T = int16_t>

GeneratedSoundStream ( SoundGenerator< T > & generator )

inline

Member Function Documentation

addNotifyAudioChange() [1/2]

virtual void addNotifyAudioChange ( AudioInfoSupport & bi )

inlinevirtualinherited

Adds target to be notified about audio changes.

Reimplemented in CodecNOP, CodecNOP, EncodedAudioOutput, and EncodedAudioStream.

addNotifyAudioChange() [2/2]

virtual void addNotifyAudioChange ( AudioInfoSupport & bi )

inlinevirtualinherited

Adds target to be notified about audio changes.

Reimplemented in CodecNOP, CodecNOP, EncodedAudioOutput, and EncodedAudioStream.

audioInfo()

template<class T = int16_t>

AudioInfo audioInfo ( )

inlineoverridevirtual

provides the actual input AudioInfo

Reimplemented from AudioStream.

audioInfoOut() [1/2]

virtual AudioInfo audioInfoOut ( )

inlinevirtualinherited

provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream

Reimplemented in ChannelFormatConverterStream, ChannelFormatConverterStreamT< T >, FormatConverterStream, MP3EncoderShine, NumberFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, Pipeline, PureDataStream, PWMAudioOutput< PWMDriverT >, ResampleStream, ResampleStreamT< TInterpolator >, and SupportedRatesStream.

audioInfoOut() [2/2]

virtual AudioInfo audioInfoOut ( )

inlinevirtualinherited

provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream

Reimplemented in ChannelFormatConverterStream, ChannelFormatConverterStreamT< T >, FormatConverterStream, MP3EncoderShine, NumberFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, Pipeline, PureDataStream, PWMAudioOutput< PWMDriverT >, ResampleStream, ResampleStreamT< TInterpolator >, and SupportedRatesStream.

available()

template<class T = int16_t>

virtual int available ( )

inlineoverridevirtual

This is unbounded so we just return the buffer size.

Reimplemented from BaseStream.

availableForWrite() [1/2]

virtual int availableForWrite ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in A2DPStream, AbstractURLStream, AnalogAudioStream, AudioStreamWrapper, AudioStreamWrapper, ConverterStream< T >, ConverterStream< T >, DynamicMemoryStream, DynamicMemoryStream, EncodedAudioStream, FilteredStream< T, TF >, FilteredStream< T, TF >, FilteredStream< int16_t, int16_t >, MemoryStream, MemoryStream, ProgressStream, ProgressStream, QueueStream< T >, QueueStream< T >, QueueStream< uint8_t >, ReformatBaseStream, RingBufferStream, RingBufferStream, Throttle, Throttle, TimedStream, AudioBLEClient, AudioBLEClient, AudioBLEServer, AudioBLEServer, AudioEffectStream, AudioEffectStreamT< T >, AudioFFTBase, AudioLoRa, AudioStreamWrapper, AutomaticGainControlStream, ChannelFormatConverterStream, ChannelFormatConverterStreamT< T >, ConverterStream< T >, DynamicMemoryStream, EncodedAudioStream, Equalizer3BandsPerChannelT< T >, Equalizer3BandsPerChannelT< float >, Equalizer3BandsT< T >, Equalizer3BandsT< float >, ESPNowStream, FadeStream, FaustStream< DSP >, FilteredStream< T, TF >, FrequencyDetectorAutoCorrelation, FrequencyDetectorZeroCrossing, HammingFEC< bytecount, block_t >, I2SCodecStream, I2SStream, MeasuringStream, MemoryStream, MiniAudioStream, NRF24Stream, NumberFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, Pipeline, ProgressStream, QualityAnalysisStream, QueueStream< T >, ReedSolomonFEC< bytecount, additional_bytes >, ReformatBaseStream, RingBufferStream, SPIAudioSlave, StdioStream, SupportedRatesStream, Throttle, TimedStream, UDPStream, URLStreamESP32, USBAudioStreamBase, VBANStream, and VolumeStream.

availableForWrite() [2/2]

virtual int availableForWrite ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in A2DPStream, AbstractURLStream, AnalogAudioStream, AudioStreamWrapper, AudioStreamWrapper, ConverterStream< T >, ConverterStream< T >, DynamicMemoryStream, DynamicMemoryStream, EncodedAudioStream, FilteredStream< T, TF >, FilteredStream< T, TF >, FilteredStream< int16_t, int16_t >, MemoryStream, MemoryStream, ProgressStream, ProgressStream, QueueStream< T >, QueueStream< T >, QueueStream< uint8_t >, ReformatBaseStream, RingBufferStream, RingBufferStream, Throttle, Throttle, TimedStream, AudioBLEClient, AudioBLEClient, AudioBLEServer, AudioBLEServer, AudioEffectStream, AudioEffectStreamT< T >, AudioFFTBase, AudioLoRa, AudioStreamWrapper, AutomaticGainControlStream, ChannelFormatConverterStream, ChannelFormatConverterStreamT< T >, ConverterStream< T >, DynamicMemoryStream, EncodedAudioStream, Equalizer3BandsPerChannelT< T >, Equalizer3BandsPerChannelT< float >, Equalizer3BandsT< T >, Equalizer3BandsT< float >, ESPNowStream, FadeStream, FaustStream< DSP >, FilteredStream< T, TF >, FrequencyDetectorAutoCorrelation, FrequencyDetectorZeroCrossing, HammingFEC< bytecount, block_t >, I2SCodecStream, I2SStream, MeasuringStream, MemoryStream, MiniAudioStream, NRF24Stream, NumberFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, Pipeline, ProgressStream, QualityAnalysisStream, QueueStream< T >, ReedSolomonFEC< bytecount, additional_bytes >, ReformatBaseStream, RingBufferStream, SPIAudioSlave, StdioStream, SupportedRatesStream, Throttle, TimedStream, UDPStream, URLStreamESP32, USBAudioStreamBase, VBANStream, and VolumeStream.

begin() [1/2]

template<class T = int16_t>

bool begin ( )

inlineoverridevirtual

start the processing

Reimplemented from BaseStream.

begin() [2/2]

template<class T = int16_t>

bool begin ( AudioInfo cfg )

inline

start the processing

clearNotifyAudioChange() [1/2]

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >, RTSPClient< EthernetClient, EthernetUDP >, and RTSPClient< WiFiClient, WiFiUDP >.

clearNotifyAudioChange() [2/2]

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >, RTSPClient< EthernetClient, EthernetUDP >, and RTSPClient< WiFiClient, WiFiUDP >.

defaultConfig()

template<class T = int16_t>

AudioInfo defaultConfig ( )

inline

end()

template<class T = int16_t>

void end ( )

inlineoverridevirtual

stop the processing

Reimplemented from BaseStream.

flush()

template<class T = int16_t>

void flush ( )

inlineoverridevirtual

Reimplemented from BaseStream.

isActive()

template<class T = int16_t>

bool isActive ( )

inline

isNotifyActive() [1/2]

bool isNotifyActive ( )

inlineinherited

Checks if the automatic AudioInfo update is active.

isNotifyActive() [2/2]

bool isNotifyActive ( )

inlineinherited

Checks if the automatic AudioInfo update is active.

not_supported() [1/2]

virtual int not_supported ( int out, const char * msg = "" )

inlineprotectedvirtualinherited

not_supported() [2/2]

virtual int not_supported ( int out, const char * msg = "" )

inlineprotectedvirtualinherited

notifyAudioChange() [1/2]

void notifyAudioChange ( AudioInfo info )

inlineprotectedinherited

notifyAudioChange() [2/2]

void notifyAudioChange ( AudioInfo info )

inlineprotectedinherited

operator bool()

template<class T = int16_t>

operator bool ( )

inlineoverridevirtual

Reimplemented from AudioStream.

readBytes()

template<class T = int16_t>

size_t readBytes ( uint8_t * data, size_t len )

inlineoverridevirtual

privide the data as byte stream

Reimplemented from AudioStream.

readSilence() [1/2]

virtual size_t readSilence ( uint8_t * buffer, size_t length )

inlinevirtualinherited

Source to generate silence: just sets the buffer to 0.

readSilence() [2/2]

virtual size_t readSilence ( uint8_t * buffer, size_t length )

inlinevirtualinherited

Source to generate silence: just sets the buffer to 0.

refillReadBuffer() [1/2]

void refillReadBuffer ( )

inlineprotectedinherited

Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read().

refillReadBuffer() [2/2]

void refillReadBuffer ( )

inlineprotectedinherited

Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read().

removeNotifyAudioChange() [1/2]

virtual bool removeNotifyAudioChange ( AudioInfoSupport & bi )

inlinevirtualinherited

Removes a target in order not to be notified about audio changes.

removeNotifyAudioChange() [2/2]

virtual bool removeNotifyAudioChange ( AudioInfoSupport & bi )

inlinevirtualinherited

Removes a target in order not to be notified about audio changes.

resize()

template<class T = int16_t>

void resize ( int maxReadSize )

inline

Redefine the buffer size which is reported in available().

setAudioInfo() [1/2]

virtual void setAudioInfo ( AudioInfo info )

inlineoverridevirtualinherited

Defines the input AudioInfo.

Implements AudioInfoSupport.

Reimplemented in AdapterAudioOutputToAudioStream, AudioInputMonitor, AudioInputMonitor, CallbackStream, CallbackStream, EncodedAudioStream, GeneratedSoundStream< T >, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, ProgressStream, ProgressStream, TimedStream, TimerCallbackAudioStream, TimerCallbackAudioStream, VolumeMeter, and VolumeMeter.

setAudioInfo() [2/2]

template<class T = int16_t>

void setAudioInfo ( AudioInfo newInfo )

inlineoverride

setInput()

template<class T = int16_t>

void setInput ( SoundGenerator< T > & generator )

inline

setNotifyActive() [1/2]

void setNotifyActive ( bool flag )

inlineinherited

Deactivate/Reactivate automatic AudioInfo updates: (default is active).

setNotifyActive() [2/2]

void setNotifyActive ( bool flag )

inlineinherited

Deactivate/Reactivate automatic AudioInfo updates: (default is active).

setWriteBufferSize() [1/2]

void setWriteBufferSize ( int size )

inlineinherited

setWriteBufferSize() [2/2]

void setWriteBufferSize ( int size )

inlineinherited

write() [1/3]

virtual size_t write ( const uint8_t * data, size_t len )

inlineoverridevirtualinherited

Implements BaseStream.

Reimplemented in A2DPStream, AdapterAudioOutputToAudioStream, AdaptiveResamplingStream, AnalogAudioStream, AnalogDriverESP32V1::IO16Bit, AnalogDriverESP32V2::IO16Bit, AdapterAudioOutputToAudioStream, AudioInputMonitor, AudioInputMonitor, AudioStreamWrapper, AudioStreamWrapper, AudioTimeSourceStream, BufferedStream, BufferedStream, CallbackStream, CallbackStream, ConverterStream< T >, ConverterStream< T >, EncodedAudioStream, FilteredStream< T, TF >, FilteredStream< T, TF >, FilteredStream< int16_t, int16_t >, MemoryStream, MemoryStream, ProgressStream, ProgressStream, RingBufferStream, RingBufferStream, Throttle, Throttle, TimedStream, VolumeMeter, VolumeMeter, AudioBLEClient, AudioBLEClient, AudioBLEServer, AudioBLEServer, AudioEffectStream, AudioEffectStreamT< T >, AudioFFTBase, AudioInputMonitor, AudioKitStream, AudioLoRa, AudioStreamWrapper, AudioTimeSourceStream, AutomaticGainControlStream, BufferedStream, BufferedTaskStream, CallbackStream, ChannelFormatConverterStream, ChannelFormatConverterStreamT< T >, ConverterStream< T >, EncodedAudioStream, Equalizer3BandsPerChannelT< T >, Equalizer3BandsPerChannelT< float >, Equalizer3BandsT< T >, Equalizer3BandsT< float >, EqualizerNBands< SampleT, AccT, NUM_TAPS, NUM_BANDS >, ESP3288AudioOutput, FadeStream, FaustStream< DSP >, FilteredStream< T, TF >, FormatConverterStream, FrequencyDetectorAutoCorrelation, FrequencyDetectorZeroCrossing, GoertzelStream, I2SCodecStream, I2SStream, LMSEchoCancellationStream< T >, MDFEchoCancellationStream< T, SampleType >, MeasuringStream, MemoryStream, MiniAudioStream, MozziStream, NRF24Stream, NumberFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, Pipeline::ModifyingStreamAdapter, Pipeline, PortAudioStream, ProgressStream, PureDataStream, QualityAnalysisStream, ResampleStream, ResampleStreamT< TInterpolator >, RingBufferStream, SPDIFOutput, SPIAudioSlave, SupportedRatesStream, TfLiteAudioStream, TfLiteAudioStreamBase, Throttle, TimedStream, URLStream, URLStreamESP32, USBAudioStreamBase, VBANStream, VolumeMeter, VolumeStream, VS1053Stream, and WM8960Stream.

write() [2/3]

virtual size_t write ( const uint8_t * data, size_t len )

inlineoverridevirtualinherited

Implements BaseStream.

Reimplemented in A2DPStream, AdapterAudioOutputToAudioStream, AdaptiveResamplingStream, AnalogAudioStream, AnalogDriverESP32V1::IO16Bit, AnalogDriverESP32V2::IO16Bit, AdapterAudioOutputToAudioStream, AudioInputMonitor, AudioInputMonitor, AudioStreamWrapper, AudioStreamWrapper, AudioTimeSourceStream, BufferedStream, BufferedStream, CallbackStream, CallbackStream, ConverterStream< T >, ConverterStream< T >, EncodedAudioStream, FilteredStream< T, TF >, FilteredStream< T, TF >, FilteredStream< int16_t, int16_t >, MemoryStream, MemoryStream, ProgressStream, ProgressStream, RingBufferStream, RingBufferStream, Throttle, Throttle, TimedStream, VolumeMeter, VolumeMeter, AudioBLEClient, AudioBLEClient, AudioBLEServer, AudioBLEServer, AudioEffectStream, AudioEffectStreamT< T >, AudioFFTBase, AudioInputMonitor, AudioKitStream, AudioLoRa, AudioStreamWrapper, AudioTimeSourceStream, AutomaticGainControlStream, BufferedStream, BufferedTaskStream, CallbackStream, ChannelFormatConverterStream, ChannelFormatConverterStreamT< T >, ConverterStream< T >, EncodedAudioStream, Equalizer3BandsPerChannelT< T >, Equalizer3BandsPerChannelT< float >, Equalizer3BandsT< T >, Equalizer3BandsT< float >, EqualizerNBands< SampleT, AccT, NUM_TAPS, NUM_BANDS >, ESP3288AudioOutput, FadeStream, FaustStream< DSP >, FilteredStream< T, TF >, FormatConverterStream, FrequencyDetectorAutoCorrelation, FrequencyDetectorZeroCrossing, GoertzelStream, I2SCodecStream, I2SStream, LMSEchoCancellationStream< T >, MDFEchoCancellationStream< T, SampleType >, MeasuringStream, MemoryStream, MiniAudioStream, MozziStream, NRF24Stream, NumberFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, Pipeline::ModifyingStreamAdapter, Pipeline, PortAudioStream, ProgressStream, PureDataStream, QualityAnalysisStream, ResampleStream, ResampleStreamT< TInterpolator >, RingBufferStream, SPDIFOutput, SPIAudioSlave, SupportedRatesStream, TfLiteAudioStream, TfLiteAudioStreamBase, Throttle, TimedStream, URLStream, URLStreamESP32, USBAudioStreamBase, VBANStream, VolumeMeter, VolumeStream, VS1053Stream, and WM8960Stream.

write() [3/3]

virtual size_t write ( uint8_t ch )

inlineoverridevirtualinherited

Reimplemented in AudioStreamWrapper, AudioStreamWrapper, BufferedStream, BufferedStream, MemoryStream, MemoryStream, RingBufferStream, RingBufferStream, AudioStreamWrapper, BufferedStream, BufferedTaskStream, MemoryStream, RingBufferStream, and URLStream.

writeSilence() [1/2]

virtual void writeSilence ( size_t len )

inlinevirtualinherited

Writes len bytes of silence (=0).

writeSilence() [2/2]

virtual void writeSilence ( size_t len )

inlinevirtualinherited

Writes len bytes of silence (=0).

Member Data Documentation

_timeout

int _timeout = 10

protectedinherited

active

template<class T = int16_t>

bool active = true

protected

buffer_size

template<class T = int16_t>

int buffer_size

protected

Initial value:

=
      DEFAULT_BUFFER_SIZE * 100

info

AudioInfo info

protectedinherited

is_notify_active

bool is_notify_active = true

protectedinherited

notify_vector

Vector< AudioInfoSupport * > notify_vector

protectedinherited

p_generator

template<class T = int16_t>

SoundGenerator<T>* p_generator = nullptr

protected

source_not_defined_error

template<class T = int16_t>

const char* source_not_defined_error = "Source not defined"

protected

tmp_in

RingBuffer< uint8_t > tmp_in {0}

protectedinherited

tmp_out

RingBuffer< uint8_t > tmp_out {0}

protectedinherited

write_buffer_size

int write_buffer_size = 8

protectedinherited

---

The documentation for this class was generated from the following file:

• src/AudioTools/CoreAudio/AudioStreams.h